Fuses fuses fuses


Ok, this is about fuses

1- a standard Bussman fuse is UL approved. Are any "high end" fuses UL approved?

2- do any component manufacturers supply their gear with any of the usual suspects of high end fuses as opposed to a standard Bussman?

3- let's say fuses do make a difference. Given incoming power is AC, why could fuses be directional? 

Not meaning to light any fires here- 

thanks in advance 
zavato
Atmosphere
"...fuse nor the fuse holder have perfect dimensions. As a result, there is a small amount of resistance at the contacts as the fuse sits in the holder. If you shift the fuse around you can reduce or increase that resistance. That is why they **appear** to be directional.

Now this is easy to measure. All you need is a DVM (Digital VoltMeter) and you simply measure the voltage drop across the fuse in the circuit. Its not going to be very much, so a DVM with more than 3 1/2 digits is helpful but not mandatory. If the fuse is in an open holder, you simply rotate it in the holder and you can watch the voltage drop across the fuse rise and fall. The least voltage drop is what you want."

>>>>>All we need? If it’s so easy to measure why don’t you or one of the other naysayers measure it? You’re just guessing. Why is it the folks that are already on board the fuse directionality AND Wire Directionality train are supposed to be the ones to measure it?

All wire is directional. Hel-loo! We Covered that in Fuses 101. More to the point HiFi Tuning data sheets already show the measured the differences in fuse direction. Not just their fuses, all manner of fuses, including stock fuses, ceramic fuses, cryo'd fuses. Guess what! It has nothing to do with the fuse holder. You act like this wire/fuse directionality thing is all new to you. The fuse holder argument can't save you in the cable directionality argument, now can it? These silly fuse Doubting Thomas threads have been going on for fifteen years. The wire directionality Doubting Thomases even longer, what, 25 years?
@atmasphere 
Sorry if I put words in your mouth. I appreciate that you have clarified what I thought you meant.
 -That was why I posted if there was a way to insure a fuse would have complete contact in a fuse holder.
Bob
Geoffkait 7-13-2017
If it’s so easy to measure why don’t you or one of the other naysayers measure it? You’re just guessing. Why is it the folks that are already on board the fuse directionality AND Wire Directionality train are supposed to be the ones to measure it?
He did measure it, Geoff.  That has been stated or clearly implied multiple times in his posts and in excerpts of his posts I have quoted, including in this thread.
More to the point HiFi Tuning data sheets already show the measured the differences in fuse direction. Not just their fuses, all manner of fuses, including stock fuses, ceramic fuses, cryo'd fuses.
Those measurements have been totally debunked as being supportive of inherent fuse directionality, ***even if it exists,*** on innumerable occasions and in great detail in numerous fuse-related threads here, all of which you have participated in.  By me, by Roger Modjeski of Music Reference and RAM Tube Works, and by others.  Surely you remember?

Regards,
-- Al

Almarg, Roger appears to be just another outspoken but deluded amp manufacturer. Do you have a better example? 😬 Besides, you should know better than to use an Appeal to Authority. Does that work in court? Do you honestly believe that cable manufacturers who put arrows on unshielded cables are pulling a fast one on naive and gullible audiophiles? No need to answer, it’s a rhetorical question.
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